Method for treating gastroesophageal reflux disease

Abstract

There is provided a method of treating gastroesophageal reflux disease, which includes dissecting one of a mucosal layer and a submucosal layer of at least one of an esophagogastric junction and a stomach in a range less than an entire circumference of a circumferential direction so that moderate stenosis occurs due to cicatrization in an area in which one of the mucosal layer and the submucosal layer is dissected.

What is claimed is: 
     
       1. A method of treating gastroesophageal reflux disease, comprising:
 a first step of inserting an endoscope to an esophagastric junction; 
 a second step of determining locations of a mucosal layer or a submucosal layer to be dissected on a stomach and the esophogastric junction; and 
 a third step of dissecting one of the mucosal layer and the submucosal layer of a lesser curvature side of the stomach and the esophagogastric junction that is next to the lesser curvature side of the stomach while a mucosal layer and a submucosal layer on a greater curvature side of the stomach is not dissected so that partial stenosis occurs due to cicatrization only in an area in which one of the mucosal layer and the submucosal layer of the lesser curvature side of the stomach and the esophagogastric junction that is next to the lesser curvature side of the stomach is dissected. 
 
     
     
       2. The method of treating gastroesophageal reflux disease according to  claim 1 ,
 wherein one of the mucosal layer and the submucosal layer is dissected in a range of ¼ or more of an entire circumference of the esophagogastric junction and less than the entire circumference thereof, the partial stenosis is induced in the esophagogastric junction, and an opening that is closed by contraction of a lower esophageal sphincter is formed in the esophagogastric junction. 
 
     
     
       3. The method of treating gastroesophageal reflux disease according to  claim 2 ,
 wherein one of the mucosal layer and the submucosal layer is dissected across a squamocolumnar junction in an area 30 mm toward a mouth from the squamocolumnar junction and in an area 30 mm toward an anus from the squamocolumnar junction out of the esophagogastric junction. 
 
     
     
       4. The method of treating gastroesophageal reflux disease according to  claim 3 ,
 wherein one of the mucosal layer and the submucosal layer is dissected in an area of 30 mm or more and 50 mm or less from the mouth side to the anus side out of the esophagogastric junction. 
 
     
     
       5. The method of treating gastroesophageal reflux disease according to  claim 4 ,
 wherein, when a distance from the mouth side to the anus side is measured in the area in which one of the mucosal layer and the submucosal layer is dissected in the esophagogastric junction, an area of the mouth side relative to the squamocolumnar junction is wider than an area of the anus side relative to the squamocolumnar junction. 
 
     
     
       6. The method of treating gastroesophageal reflux disease according to  claim 1 ,
 wherein, when the esophagogastric junction is located in a thoracic cavity side relative to a diaphragm due to a sliding esophageal hiatal hernia, one of the mucosal layer and the submucosal layer in the stomach is dissected in a range less than an entire circumference of the stomach in a part of the stomach in contact with the esophageal hiatus so that the partial stenosis is induced in the stomach. 
 
     
     
       7. The method of treating gastroesophageal reflux disease according to  claim 1 ,
 wherein, when the esophagogastric junction is located in a thoracic cavity side relative to a diaphragm due to a sliding esophageal hiatal hernia, the partial stenosis is induced in the esophagogastric junction. 
 
     
     
       8. The method of treating gastroesophageal reflux disease according to  claim 6 ,
 wherein one of the mucosal layer and the submucosal layer including at least the lesser curvature side of the stomach in at least one of the esophagogastric junction and the stomach is dissected so as to form the partial stenosis. 
 
     
     
       9. The method of treating gastroesophageal reflux disease according to  claim 1 ,
 wherein one of the mucosal layer and the submucosal layer is dissected across a squamocolumnar junction in an area 30 mm toward a mouth from the squamocolumnar junction and in an area 30 mm toward an anus from the squamocolumnar junction out of the esophagogastric junction. 
 
     
     
       10. The method of treating gastroesophageal reflux disease according to  claim 7 ,
 wherein one of the mucosal layer and the submucosal layer including at least a lesser curvature side of the stomach in at least one of the esophagogastric junction and the stomach is dissected so as to form the partial stenosis.